PART A: Which of the following identifies the central idea of the text?
A. If the Maya people understood their environment and the consequences of their
actions, they would not have altered their environment.
B. The Maya people abandoned their homes after realizing that they had severely
impacted the environment, hoping to allow it time to recover.
C. If we continue deforestation at the same rate as the Maya people, we will
eventually have to move in search of more resources.
D. The Maya people dramatically altered their environment, depleted its resources,
and were forced to abandon it to survive.

well people will have to mark your answer as the best answer. and from that u receive crowns.

~batmans wife dun dun

amaterasu is my sister! wow so rude!

1. the relationship between a pronoun and its antecedent- reference

reference refers to the relationship between mainly pronoun and another unit of grammar- noun phrase or noun.

2. a singular noun naming a collection or group- collective noun.

collective noun refers to the kind of noun which refer to the name of people, thing or anything in collective. for instance bundle of sticks, herein 'bundle' is collective noun.  

3. a modifying clause whose subject and/or verb is implied- elliptical clause

it is a clause in which words are being left out. on the other hand, the missing word is understood due to the logic or pattern of the sentence.  

4. two or more nouns and/or pronouns serving the same grammatical function and followed by a pronoun that references one or all nouns- compound antecedent

compound antecedent refers to which is made up of two or more words which are joined by 'or' or 'and.'

5. an adjective clause introduced by a pronoun- relative clause.

relative clauses are the clauses which begin with the relative pronouns such as when, where, which, that or who. the noun that precedes, relative pronouns identify or define that noun.  

6. the word, phrase, or clause to which a pronoun refers- antecedent.

antecedents refers to the phrases, clauses or words which are replaced with one of the third personal pronouns.

i would say the answer is a